voltage direction 中文意思是什麼
voltage direction
解釋
電壓極性-
In this thesis, the author analyses the deficiency in detecting and controlling function of the computer detecting and controlling system utilized in present transforming station. the strategy of design of software on operation and direction of 5 00kv transformer station is presented. it points out that we can deduce the mathematic analytical formula using the current, voltage and power of two terminals of transmission line as input. on this basis, we do realtime calculation of 500kv transmission line ' s parameter. we can also deduce the linear analytical formula of three - winding autotransformer ' s resistence using its current, voltage and power as input. the corresponding software is programmed on this basis
論文提出以輸電線路本端和對端電流、電壓、功率作為輸入量，導出了超高壓長線的波阻抗和傳播常數的數學解析式，在此基礎上進行了500kv輸電線路實時參數計算；提出以三繞組自耦變壓器的電流、電壓、功率為輸入量，導出了自耦變壓器繞組的電阻、電抗的線性解析式並進而對變壓器的實時參數進行計算；在此基礎上編制了相應的軟體。 -
Dds951 series electronic single - phase electric meter is the most advanced static electronic meter in china. the meter designs use large - scale intergated circuit. high reliability step motor, it can the ac single - phase active energv voltage rating : 220v : frequency 50hz, positive and negative two directions and accumulates in one direction. the test singnal is isolated by phototransistor : it also has the function of anti - fraud, and indicates it s operation situation on flash light, so it could be managed very easy
Dds951單相電子電能表，是金雀儀表公司開發的新型電度表。該產品是採用規模專用集成電路，高可靠性步進電機等先進技術製造的國內最新電能試題新產品，用來計量額定電壓為220v ，頻率為50hz的交流單相有功電能，該產品能夠精確計量正負兩方向的有功電能，且以同一個方向累計。 -
The second, at the high frequency primary coil, when switch turn on with control signal ( the spwm pulse is modulated ), in the positive or negative semi - period of low frequency modulation signal, transformer coil with same direction voltage. the magnetic flux of transformer core will increase step by step. at the end, it leads to magnetic flux saturation
二、在高頻變壓器原邊，當開關管接收控制信號脈沖列（經調制的spwm波列）導通時，在低頻調制信號的正半周或負半周內，施加在變壓器繞組上的是同一方向的電壓，變壓器磁芯中的磁通可能將級進地逐漸增加，導致磁芯飽和，造成磁偏或單向磁化，導致低頻電信號放大失真或由於很大的磁化電流而無法正常工作。 -
During the research of theory, developed models of power tetrode ( y841 ), and then examined the control characteristics using circuit analysis software, matlab - simulink. the analysis software tools was used to simulate the control system of high voltage power supply and yielded coincident results. by theory analysis, proved that control system design project of high voltage power supply was feasible, and provided direction for the system ' s experiment
運用matlab - simulink工具，對負高壓電源的反饋控制進行了模擬模擬，從模擬的結果來看，該控制系統能夠滿足負高壓電源的- 80kv ，約100ms脈寬， 0 . 3精度的技術要求，而實驗結果也驗證了我們的設計是完全可行的。 -
The electrode is driven by elliptical movement and its direction is controlled by t wo voltage phase - difference
為實現電火花電極的微米級步距，設計了橢圓微驅動電路，並能有效地控制電極的運動方向。 -
Specification for calculation of protecting distance for ac high voltage overhead power transmission lines to shortwave radio direction finding stations and receiving stations
交流高壓架空送電線對短波無線電測向臺站和收信臺站保護間距的計算規程 -
According to more effect, when the hore component is placed in a gradient field, at the same time the direction of the current is perpendicular to the direction of the voltage, then between the two parallel side face come out the hore voltage. when hore component is set in this kind of uni - gradient magnetic field and the electric current is unchanged, the voltage output of hore component will be proportional to the position of the hore component in the magnetic field. so we can use the hore component to measure the movement of hore component against magnetic field
根據霍爾效應可知，置於磁場中的霍爾元件若電流方向與磁場方向垂直，則在霍爾元件垂直於磁場和電流方向的兩個側面將產生電勢，將霍爾元件置於強度隨空間位置線性變化的磁場中，且控制電流恆定，輸出就正比于霍爾元件處于磁場中的位置，因此可以用霍爾元件來測量磁場與霍爾元件間的相對位移量。 -
Influence of dc - rail zero - voltage notch on the output of the inverter is investigated, and an important conclusion is obtained that the direction of output current of the inverter is not effected by the voltage deviation produced by dc - rail zero - voltage notch, on the basis of which, a new simple correction approach is put forward. experiment results show that the proposed correction method is effective
探索了直流母線零電壓凹槽對逆變器輸出特性的影響，得出了母線零電壓凹槽形成的輸出電壓偏差與逆變器輸出電流方向無關這一重要結論，在此基礎上，提出了一種簡便的校正新方法，通過試驗驗證了該校正方法的有效性。 -
However, df pre - processing is not required in a interferometer direction finder. it only makes use of the phase relations or differences of sensors disposed at different position. azimuth and elevation are caculated from the phase differences or displayed directly on a crt drived by the voltage or current from the phase differences
干涉儀測向不必進行測向信號預處理而是直接或間接求取在空間上分開的傳感器上感應電勢之間的相位關系，即干涉相位差，方位角或仰角是直接由干涉相位差計算得到，或將兩基線正交的天線陣的干涉相位差轉化為驅動電壓（電流）分別加到crt陰極顯示器的垂直偏轉線圈和水平偏轉線圈，模擬顯示出來波方位，干涉儀測向為典型的相位測向方法。 -
At the same time, the correcting valuation of laser hammering increases with the increment of pulse and voltage. the y direction is the major shift
焊接電壓和脈寬越大，最高溫度越高，熱應力影響區越大，同時焊后校正偏移量越大。 -
One - step synthesization made the electrical properties more stable, controling the reducing sintering temperature and retention time can adjust the electrical properties in a certain scope, changing the oxidation temperature made the varistor ’ s voltage v10ma changed, using the special double - layer silver plasm can eliminate the voltage - direction problem
一次配料得到的樣品電性能一致性更好;控制還原氣氛燒結溫度和保溫時間，可以在一定范圍內調節鈦酸鍶壓敏電阻器的電性能，改變氧化溫度可以獲得不同的壓敏電壓，從而得到系列化產品;採用雙層銀漿工藝成功消除了壓敏電壓的方向性問題。 -
The phase structure of different cu - fe thin films were studied by using grazing incidence x - ray analysis ( gixa ). the texture and residual stress of different cu - fe thin films were measured by scan of x - ray diffraction ( xrd ) and 2 scan with different. the thicknesses of different thin films were characterized by means of small angle x - ray scattering ( saxs ) technique. by using atomic force microscope ( afm ) measured surface roughness of thin films. the component of different thin film was characterized by energy disperse spectrum ( eds ) and x - ray fluorescence ( xrf ). the magnetic properties of cu - fe thin films were measured by means of vibrating sample magnetometer ( vsm ). in addition, the giant magnetoresistance ( gmr ) effects of different films were also measured. the original resistance of the film fabricated by a direction - current magnetron sputtering system is directly affected by bias voltage
利用掠入射x射線分析（ gixa ）技術對不同cu - fe薄膜的相結構進行了研究;利用xrd掃描及不同角度的2掃描對薄膜進行了結晶織構及殘余應力分析;運用小角x射線散射（ saxs ）技術測量了薄膜的厚度;採用原子力顯微鏡（ afm ）觀察了薄膜的表面形貌;運用能量損失譜（ eds ）及x射線熒光光譜（ xrf ）對薄膜進行了成分標定;使用振動樣品磁強計測量了不同cu - fe過飽和固溶體薄膜的磁性能;最後利用自製的磁阻性能測試設備測量了真空磁場熱處理前後不同薄膜的巨磁阻值。 -
If ordering please indicate the number of sockets, voltage, current, the number of inlet, direction and specification, if need outlet wire, please offer the direction, number and specification ; if want chief switch, please show the currents and poles
訂貨時應註明插座數量，對應的電壓和電流，進線口數量，方向及規格，如需要配出線口，請註明方向數量及規格:如帶開關請註明開關的電流大小及極數 -
Because the vacuum interrupter has fully utilized the excellent insulation and putting out electric arc character of vacuum, it became the mainstream and direction of development in low and mid voltage field
真空滅弧室由於充分利用了真空優異的絕緣與熄弧特性，在中壓開關領域中已成為當前的主流及未來發展的方向。 -
( 1 ) cfrc can effectively reduce the driving voltage required by catholic protection because of its good electric conductivity ; ( 2 ) applying cement - based pn - junctions on the prevention of reinforcement corrosion. in the interface of p - type region and n - type region of pn junctions a self - built electric field will be formed, and its direction is from n - type region to p - type region
由於cfrc具有良好的導電能力，利用cfrc進行陰極防護，能有效的降低陰極防護驅動電壓；應用水泥基pn結的自建電場進行鋼筋銹蝕防護，能在不降低結構性能的基礎上提高鋼筋的電子逸出功，使鋼筋中的電子不易逸出，達到鋼筋銹蝕防護的目的。 -
According to direction of magnetic field, the touch head is divided into horizontal magnetic field structure and vertical magnetic field structure. in the paper a new type vacuum interrupter based on horizontal magnetic cup touch head was designed and the performance was researched when it was applied to the low voltage breaker
根據所產生的磁場方向的不同，可分為橫向磁場結構和縱向磁場結構，本文設計了一種具有杯狀橫磁場觸頭結構的真空滅弧室，研究它在低壓真空斷路器中的開斷性能。 -
6. since the reactor has the structure of multi - layer in parallel, the axial electric stress of coil is zero. under steady operation voltage, the voltage is distributed evenly along axial direction of coil
6 .由於電抗器採用多層並聯結構，線圈的軸向電應力為零，在穩態工作電壓下，沿線圈軸向高度方向的電壓分佈均勻。 -
The optical effect on the uniformity of mesfet threshold voltage is studied. results show that optical radiation enhances the drain - source current of the gaas mesfet, and makes the threshold voltage to move toward negative direction. optical radiation enhances the uniformity of mesfet threshold voltage
本文研究了光照對閾值電壓均勻性的影響，觀察到在光照條件下，耗盡型mesfet的溝道電流增加，閾值電壓向負方向增加，光照提高了閾值電壓的均勻性。 -
And the converter will work on the strategy of vector control with the definitive direction of the stators magnetic field. also, the thesis develops the algorithm to corroborate the magnetic field ' s direction by the state ' s current and voltage. to validate the theory analysis of bdfg
根據理論分析和模擬的結果，本文提出級聯式無刷雙饋發電機的控制策略是基於定子磁鏈定向的矢量控制方法，並推導了用定子側電壓電流量來確定定子磁鏈方向的演算法，繪制了相應的閉環控制框圖。 -
The contributions done are as follows : according to the mathematical model of doubly fed motor and the theory of vector control, a unit power factor of rotor control scheme is proposed. in the doubly fed adjustment system, in order to control magnetic torque of motor this scheme is designed by controlling the reverse direction between rotor voltage and current to keep the vertical direction between rotor current and flux. it is known from theoretical analysis that for partly decoupling this scheme is only effective under sub - synchronization speed, but not control the system and obtain steady state since speed adjustment system ca n ' t adjust the magnitude of rotor flux under sup - synchronization
而傳統的無速度傳感器雙饋調速矢量控制系統，由於採用磁鏈定向方法，在同步速附近存在較大的工作死區，針對上述問題，本文做了如下的研究工作：本文從雙饋電機的數學模型出發，根據矢量控制的基本原理，提出了一種轉子側功率因數為1的雙饋電機矢量控制方案的設想，即在雙饋調速時採用轉子電流定向的方法，並控制外加轉子電壓與轉子電流始終反相，以保持了轉子電流與轉子磁鏈矢量垂直，通過控制轉子電流的大小來達到控制電機電磁轉矩的要求。
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